Quickest way of splitting a string

[snippsat]

I should not be slow,just splitting out numbers should take no time at all.

>>> s.split()
>>> s = 'bbb 3 3'
>>> s = s.split()
>>> s
['bbb', '3', '3']
>>> s[-2:]
['3', '3']
>>> # To integer
>>> [int(i) for i in s[-2:]]
[3, 3]

Can use regex to get number,but there should be no speed advantage to talk about.

>>> import re
>>> 
>>> s = 'bbb 3 3'
>>> re.findall(r'\d', s)
['3', '3']